Patient info Open main menu

Donepezil Hydrochloride 5 mg orodispersible tablets – patient leaflet, side effects, dosage

Last updated: · Text from the MHRA, as of · About this document

Medicine status: Prescription only (POM) Details

Medicine strength:
5 mg
Contains active substance:
ATC code:
Similar medicines:

Patient leaflet - Donepezil Hydrochloride 5 mg orodispersible tablets

1. What Donepezil hydrochloride is and what it is used for

This medicine contains the active substance donepezil hydrochloride. This medicine belongs to a group of medicines called acetylcholinesterase inhibitors. Donepezil increases the levels of a substance (acetylcholine) in the brain involved in memory function by slowing down the breakdown of acetylcholine.

It is used to treat the symptoms of dementia in people diagnosed as

having mild and moderately severe Alzheimer's disease. The symptoms include increasing memory loss, confusion and behavioural changes. As a result, sufferers of Alzheimer's disease find it more and more difficult to carry out their normal daily activities.

Donepezil hydrochloride is for use in adult patients only.

2. What you need to know before you take Donepezil hydrochloride Do not take Donepezil hydrochloride

Ÿ If you are allergic to donepezil hydrochloride, or to piperidine

derivatives, or any of the other ingredients of this medicine (listed in section 6)

Warnings and precautions

Talk to your doctor or pharmacist before taking Donepezil hydrochloride if you have or have had:

Ÿ stomach or duodenal ulcers

certain abnormal heart rhythms called Torsade de Pointes or if anyone in your family has 'prolonged QT interval' Ÿ seizures (fits) or convulsions

Ÿ a heart condition (such as irregular or very slow heart beat, heart

failure, myocardial infarction )

Ÿ a heart condition called 'prolonged QT interval' or a history of

Ÿ low levels of magnesium or potassium in your blood

Ÿ asthma or other long term lung disease

Ÿ liver problems or hepatitis

Ÿ difficulty passing urine or mild kidney disease

Also tell your doctor if you are pregnant or think you might be pregnant.

Donepezil hydrochloride can be used in patients with kidney disease or mild to moderate liver disease. Tell your doctor first if you have kidney or liver disease. Patients with severe liver disease should not take Donepezil hydrochloride.

Tell your doctor or pharmacist the name of your caregiver. Your caregiver will help you to take your medicine as it is prescribed.

Children and adolescents

This medicine is not recommended for use in children and adolescents (younger than 18 years of age).

Other medicines and Donepezil hydrochloride

Tell your doctor or pharmacist if you are taking, have recently taken or might take any other medicines.

This includes medicines that your doctor has not prescribed for you but which you have bought yourself from a chemist/pharmacist. It also applies to medicines you may take some time in the future if you continue to take Donepezil hydrochloride. This is because these medicines may weaken or strengthen the effects of Donepezil hydrochloride.

Ÿ medicines for heart rhythm problems e.g. amiodarone, sotalol Ÿ medicines for psychosis e.g. pimozide, sertindole, ziprasidone In particular it is important to tell your doctor if you are taking any of the following types of medicines:

Ÿ other Alzheimer's disease medicines, e.g. galantamine Ÿ pain killers or for treatment of arthritis e.g. aspirin, non-steroidal anti-inflammatory (NSAID) drugs such as ibuprofen or diclofenac sodium

Ÿ anticholinergics medicines, e.g. tolterodine

Ÿ medicines for bacterial infections e.g. clarithromycin, erythromycin, levofloxacin, moxifloxacin, rifampicin Ÿ anti-fungal medicine e.g. ketoconazole

Ÿ medicines for depression e.g. citalopram, escitalopram, amitriptyline fluoxetine

Ÿ anticonvulsants e.g. phenytoin, carbamazepine

Initially, the recommended dose is 5 mg (one white tablet) every night before you go to bed. After one month, your doctor may tell you to take 10 mg (one yellow tablet) every night before you go to bed. Ÿ medication for a heart condition e.g. quinidine, beta-blockers

(propranolol and atenolol)

Ÿ muscle relaxants e.g. diazepam, succinylcholine

Ÿ general anaesthetic

Always take this medicine exactly as your doctor or pharmacist has told you. Check with your doctor or pharmacist if you are not sure. Ÿ medicines obtained without a prescription e.g. herbal remedies

Food will not influence the effect of Donepezil hydrochloride. If you are going to have an operation that requires you to have a general anaesthetic, you should tell your doctor and the anaesthetist that you are taking Donepezil hydrochloride. This is because your medicine may affect the amount of anaesthetic needed.

Donepezil hydrochloride with food, drink and alcohol

Do not take this medicine with alcohol because alcohol may change its effect.

Pregnancy, breast-feeding and fertility

If you are pregnant or breast-feeding, think you may be pregnant or are planning to have a baby, ask your doctor or pharmacist for advice before taking this medicine.

You should not take Donepezil hydrochloride

while breast-feeding.

Driving and using machines

Alzheimer's disease may impair your ability to

drive or operate machinery and you must not perform these activities unless your doctor tells you that it is safe to do so.

Also, your medicine can cause tiredness, dizziness and muscle cramp. If you experience any of these effects you must not drive or operate machinery.

3. How to take Donepezil hydrochloride

How much Donepezil hydrochloride should you take

If you experience abnormal dreams, nightmares or difficulty in sleeping (see section 4) your doctor may advise you to take Donepezil hydrochloride in the morning.

The tablet strength you will take may change depending on the length of time you have been taking the medicine and on what your doctor recommends.

The maximum recommended dose is 10 mg each night.

Always follow your doctor or pharmacist's advice about how and when to take your medicine. Do not alter the dose yourself without your doctor's advice.

How to take your medicine

Place the tablet on your tongue and allow it to disintegrate before swallowing, with or without water, according to your preference.

Use in Children and adolescents

Donepezil hydrochloride is not recommended for use in children and adolescents (younger than 18 years of age).

For how long should you take Donepezil hydrochloride

Your doctor or pharmacist will advise you on how long you should continue to take your tablets. You will need to see your doctor from time to time to review your treatment and assess your symptoms.

If you take more Donepezil hydrochloride than you should

Contact your doctor or the nearest hospital emergency department immediately if you take more of the medicine than you should. Take this leaflet and any remaining tablets with you.

Overdose symptoms may include nausea (feeling sick) and vomiting (being sick), drooling, sweating, slow heart rate, low blood pressure (light-headedness or dizziness when standing), breathing problems, losing consciousness and seizures (fits) or convulsions.

If you forget to take Donepezil hydrochloride

If you forget to take your medicine, take the next dose at the usual time. Do not take a double dose to make up for a forgotten tablet. If you forget to take your medicine for more than one week, call your doctor before taking any more medicine.

If you stop taking Donepezil hydrochloride

Do not stop taking the tablets unless told to do so by your doctor. If you stop taking Donepezil hydrochloride, the benefits of your treatment will gradually fade away.

If you have any further questions on the use of this medicine, ask your doctor or pharmacist.

4. Possible side effects

Like all medicines, this medicine can cause side effects, although not everybody gets them. The following side effects have been reported by people taking Donepezil hydrochloride.

Tell your doctor if you have any of these effects while you are taking this medicine.

Serious side effects:

You must tell your doctor immediately if you notice these serious side effects mentioned.

You may need urgent medical treatment.

Ÿ liver damage e.g.hepatitis. The symptoms of

hepatitis are nausea (feeling sick) or vomiting (being sick), loss of appetite, feeling generally unwell, fever, itching, yellowing of the skin and eyes, and dark coloured urine (may affect up to 1 in 1,000 people).

Ÿ stomach or duodenal ulcers. The symptoms of ulcers are stomach

pain and discomfort (indigestion) felt between the navel and the breast bone (may affect up to 1 in 100 people).

Ÿ hallucinations (seeing or hearing things that are not really there) Ÿ bleeding in the stomach or intestines. This may cause you to pass

black tar like stools or visible blood from the rectum (may affect up to 1 in 100 people).

consciousness (a disorder called “Neuroleptic Malignant Syndrome”) (may affect up to 1 in 10,000 people) Ÿ seizures (fits) or convulsions (may affect up to 1 in 100 people)

Ÿ fever with muscle stiffness, sweating or a lowered level of

Ÿ muscle weakness, tenderness or pain and particularly, if at the

same time, you feel unwell, have a high temperature or have dark urine. They may be caused by an abnormal muscle breakdown which can be life threatening and lead to kidney problems (a condition called rhabdomyolysis) (may affect up to 1 in 10,000 people)

Ÿ fast, irregular heart beat and fainting, which could be symptoms of

a life-threatening condition known as Torsade de Pointes (frequency cannot be estimated from the available data)

Other side effects

Very common side effects (may affect more than 1 in 10 people): Ÿ diarrhoea

Ÿ headache

Common side effects (may affect up to 1 in 10 people):

Ÿ muscle cramp

Ÿ tiredness

Ÿ difficulty in sleeping (insomnia)

Ÿ the common cold

Ÿ unusual dreams including nightmares

Ÿ agitation

Ÿ aggressive behaviour

Ÿ fainting

Ÿ dizziness

Ÿ stomach feeling uncomfortable

Ÿ rash

Ÿ passing urine uncontrollably

Ÿ accidents (patients may be more prone to falls and accidental injury) Ÿ pain

Uncommon side effects (may affect up to 1 in 100 people): Ÿ slow heart beat

Ÿ salivary hypersecretion

Rare side effects (may affect up to 1 in 1000 people): Ÿ stiffness, shaking or uncontrollable movement especially of the face and tongue but also of the limbs

Not Known (frequency cannot be estimated from the available data): Ÿ Changes in the heart activity which can be seen on an electro-cardiogram (ECG) called 'prolonged QT interval' Ÿ libido increased, hypersexuality

Ÿ Pisa syndrome (a condition involving involuntary muscle contraction with abnormal bending of the body and head to one side)

Reporting of side effects

Keep this medicine out of the sight and reach of children. If you get any side effects, talk to your doctor or pharmacist. This includes any possible side effects not listed in this leaflet. You can also report side effects directly via the Yellow Card Scheme at: www.mhra.gov.uk/yellowcard or search for MHRA Yellow Card in the Google Play or Apple App Store. By reporting side effects you can help provide more information on the safety of this medicine.

5. How to store Donepezil hydrochloride

Do not use this medicine after the expiry date which is stated on the carton after EXP. The expiry date refers to the last day of that month.

Donepezil hydrochloride 5 mg orodispersible tablets: White to off-white colour, circular, flat face bevelled edge uncoated tablet debossed with “CL 31” on one side and plain on the other side. Do not store above 30°C

Do not throw away any medicines via wastewater or household waste. Ask your pharmacist how to throw away of medicines you no longer use. These measures will help to protect the environment.

6. Contents of the pack and other information What Donepezil hydrochloride contains

sodium chloride, ferric oxide yellow and magnesium stearate. Ÿ The active substance is donepezil

hydrochloride. Two different strengths of

tablets are available. Each 5 mg

orodispersible tablet contains 5 mg of

donepezil hydrochloride and each 10 mg

orodispersible tablet contains 10 mg of donepezil hydrochloride.

Ÿ The other ingredients are mannitol, crospovidone, sucralose,

What Donepezil hydrochloride looks like and contents of the pack

Donepezil hydrochloride 10 mg orodispersible tablets: Yellow colour, circular, flat face bevelled edge uncoated tablet debossed with “CL 32” on one side and plain on the other side.

Blister pack comprises of Aluminium foil and cold form laminate. Pack sizes: 14 and 28 orodispersible tablets in blister packs.

Not all pack sizes may be marketed.

Marketing Authorisation Holder and Manufacturer

Macleods Pharma UK Limited.

Wynyard Park House, Wynyard Avenue,

Wynyard, Billingham, TS22 5TB,

United Kingdom.

PL 34771/0280-0281

This leaflet was last revised in {07/2026}

About this document

Source: MHRA - Medicines and Healthcare products Regulatory Agency (products.mhra.gov.uk) · Marketing authorisation: PL 34771/0280

Last revision stated in the text: July 2026 · MHRA data as of 13 October 2026

Found a mistake? Tell us on the contact page.

The information on this site does not replace the advice of a doctor or pharmacist.

Facts about Donepezil Hydrochloride 5 mg orodispersible tablets

Prescription needed? Yes, prescription-only medicine (POM)
Active substance Donepezil
Strength 5 mg
Pharmaceutical form Orodispersible tablet
White to off-white colour, circular, flat face bevelled edge uncoated tablet debossed with “CL 31” on one side and plain on the other side.
Dimensions: 7.5 mm ± 0.2 mm
How is it taken Oral
Excipients Mannitol, Crospovidone, Sucralose, Sodium Chloride, Magnesium stearate
Pack sizes 28 tablet
Is it available? Listed as available (NHS Dictionary of Medicines and Devices – not a record of current supplies)
Shelf life 3 years.
Storage Do not store above 30°C
Drug group (ATC) Anti-dementia drugs; anticholinesterase; ATC- code N06DA02
  1. N Nervous system drugs
    1. N06 Psychoanaleptics
      1. N06D Anti-dementia drugs
        1. N06DA Anticholinesterase anti-dementia drugs
          1. N06DA02 donepezil
Marketing authorisation PL 34771/0280 (first authorised 31 March 2022)
Marketing authorisation holder Macleods Pharma UK Limited
Codes GTIN 8901463170830 · BNF 04110000

Sources: the MHRA product information (products.mhra.gov.uk) and the NHS Dictionary of Medicines and Devices (dm+d), release 10.2.0 of 19 October 2026, NHS Business Services Authority. Contains public sector information licensed under the Open Government Licence v3.0.